Results
Bony union was detected on radiography (Figure 3 C, D) 6 months after surgery, although a radiolucent area surrounding the implant remained. The patient could walk without support. The passive range of motion of the left ankle joint was 5°/20° in dorsiflexion/plantar flexion before surgery and 5°/10° after surgery. The functional outcome of the ankle joint was measured using the Japanese Society for Surgery of the Foot (JSSF)-RA foot ankle scale17 and the RA activity was measured using the DAS28 score. The patient’s JSSF-RA and DAS28 scores improved from 37 and 3.07 before surgery to 72 and 2.22 after surgery, respectively.